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So that wraps up the action. Down boss Jim McCorry refuses to blame the ref for his team's demise, saying they had their chances to win.

They go into the qualifiers and will discover their first-round opponents when the draw is made tomorrow morning.

Derry must wait until next Sunday and the last quarter-final between Donegal and Armagh to find out who they play next. We'll be back then.

Posted at 14:41 7 Jun 201514:41 7 Jun 2015

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Oisin McConville

BBC Sport NI GAA analyst

"Derry stopped after the red card. Down had three chances at the end but fluffed their lines."

15:36

Derry have done it

Derry 0-12 Down 0-11

That last score proves decisive as Derry go into the semi-finals and Down are consigned to the qualifiers.

Down had been pushing for a winning score after a creditable comeback with 14 men. They surrendered possession in additional time when young Jerome Johnston's shot fell short and Derry worked the ball up field to get the vital score.

So, a first Ulster Championship win for Brian McIver as Derry manager.

He says: "We are just relieved to come out of it with a result. We played well in the fist half but actually the sending-off did not do us any favours. But we showed composure in the end and got the score that decided it."

Press EyeCopyright: Press Eye

Derry manager Brian McIver used to be on the backroom team with DownImage caption: Derry manager Brian McIver used to be on the backroom team with Down

Posted at 14:39 7 Jun 201514:39 7 Jun 2015

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Martin Clarke

BBC Sport NI pundit

"As a Down supporter I'm very proud of the boys. They did excellent to get back in the game with 14 men. Disappointing result but the performance in the second half was very encouraging."

71 mins

Key moment

Derry 0-12 Down 0-11

Down's Darren O'Hagan gets a black card for dragging Kevin Johnston to the deck and Eoin Bradley taps over a simple free to put Derry ahead in stoppage-time. Seconds left.

Posted at 14:30 7 Jun 201514:30 7 Jun 2015

Level again

Derry 0-11 Down 0-11

Another Paul Devlin free for Down and the sides are level with three minutes, plus stoppage time, left.

63 mins

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Derry 0-11 Down 0-10

Derry get their first point for 21 minutes as Cailean O'Boyle stretches to touch the ball over.

58 mins

Bookings now being taken

Derry's Niall Holly and Danny Heavron - and Caolan Mooney of Down - are the latest to go into the referee's book.

Posted at 14:23 7 Jun 201514:23 7 Jun 2015

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Martin McHugh

BBC Sport NI GAA analyst

"Donal O'Hare is winning all the ball inside and has turned the game for Down. Your money would be on Down now."

57 mins

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Derry 0-10 Down 0-10

The Down flags are flying again as Mourne skipper Conor Laverty levels the scores from play. The last four scores have been by Down who seem to be doing better with 14 men than they did with 15.

53 mins

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Derry 0-10 Down 0-9

Derry might have a numerical advantage, but their lead is being eroded at a worrying rate. Once again it is Paul Devlin with a free - his fifth score of the afternoon. A one-point game.

51 mins

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Derry 0-10 Down 0-8

Paul Devlin delivers two accurate frees to reduce Down's deficit to two points.

Posted at 14:04 7 Jun 201514:04 7 Jun 2015

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Martin McHugh

BBC Sport NI GAA analyst

"Technically the referee was right but the red card looked harsh. It's very hard to play with 14 men in modern-day football."

41 mins

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Derry 0-10 Down 0-6

Is this going to be Derry's day? Mark Lynch's free and a point from play by Eoin Brdley suggest it well might be.

37 mins

Red card

Down to 14 men

Down corner half-back Conaill McGovern is shown a straight red card for pushing a hand into the face of opponent Enda Lynch. Looks a harsh verdict.

Referee Eddie Kinsella acted on the advice of umpires - but action replays show McGovern has been unlucky. The Burren man may have been a bit silly in the way he fended off Lynn, but it was hardly worthy of an instant dismissal.

Posted at 14:00 7 Jun 201514:00 7 Jun 2015

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Derry 0-8 Down 0-6

Down strike first in the second half as Conor Laverty scores from play.

Posted at 13:56 7 Jun 201513:56 7 Jun 2015

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Martin Clarke

BBC Sport NI pundit

"Down have shown a new-found resilience this season under Jim McCorry. I think they will come out for the second half with their ears ringing - this game is far from over.

Posted at 13:54 7 Jun 201513:54 7 Jun 2015

Minor match

By the way, in the Minor match which took place before the Senior game, Derry beat Down 2-11 to 1-07.

Will it be a Derry double?

Posted at 13:51 7 Jun 201513:51 7 Jun 2015

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Paddy Bradley

Derry All Star

"It's a day for big players and Derry have three performing well - Eoin Bradley, Enda Lynch and Fergal Doherty are the difference between the sides."

Posted at 13:44 7 Jun 201513:44 7 Jun 2015

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Oisin McConville

BBC Sport NI GAA analyst

"We got what we expected - very defensive. Derry look as if they are carrying out their gameplan better that Down and they are creating the spaces."

Posted at 14:28 7 Jun 201514:28 7 Jun 2015

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InphoCopyright: Inpho

Derry's Fergal Doherty in action against Kevin McKernan of DownImage caption: Derry's Fergal Doherty in action against Kevin McKernan of Down

Down selector Mark Copeland: "Derry pulled away there at the end of the first half and we need a big improvement in the second half."

Posted at 13:41 7 Jun 201513:41 7 Jun 2015

Half-time

Derry 0-8 Down 0-5

Mark Lynch seems to have recovered from his shaky start as two fine points in stoppage time give Derry a useful three-point interval advantage.

But, be warned you Oak Leafers, Brian McIver's men have yet to convert a half-time lead into a full-time victory this year.

Posted at 13:37 7 Jun 201513:37 7 Jun 2015

comments

Via Twitter

"The referee isn't letting this game flow at all - loves the whistle!" - Lisa McNulty

"The referee is very fond of his whistle today. Stop-start game"- Wee Dan

Posted at 13:35 7 Jun 201513:35 7 Jun 2015

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Martin McHugh

BBC Sport NI GAA analyst

"In the modern game teams don't do enough one-twos - that worked brilliantly for Kevin McKernan and it was a very good point."

32 mins

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Derry 0-6 Down 0-5

A good score for Down as Kevin McKernan does the business with the outside of his right boot. Classy.

Posted at 13:32 7 Jun 201513:32 7 Jun 2015

Yellow card

Down defender Luke Howard goes into the book

31 mins

On the mark

Derry 0-6 Down 0-4

Oak Leaf skipper Mark Lynch advances to score left-footed from play

26 mins

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Derry 0-5 Down 0-4

Paul Devlin of the Kilcoo club tags on his second free of the afternoon.

Posted at 13:26 7 Jun 201513:26 7 Jun 2015

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Martin McHugh

BBC Sport NI GAA analyst

"That will give Mark Lynch confidence. You have to show that mental strength and I think he will score more more."

24 mins

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Derry 0-5 Down 0-3

Two points between the teams once more as Mark Lynch finally finds his range with a free.

Posted at 13:25 7 Jun 201513:25 7 Jun 2015

Yellow card

An umpire alerts the attention of referee Eddie Kinsella to some misbehaving and yellow cards are shown to Derry defender Dermot McBride and Down's Donal O'Hare.

19 mins

Paul over

Derry 0-4 Down 0-3

The left boot of Paul Devlin brings a much-needed point for Down - witnessed by the official attendance of 10,541

14 mins

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Derry 0-4 Down 0-2

Two between them now as Eoin Bradley converts another free for the hosts.

13 mins

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Derry 0-3 Down 0-2

Enda Lynn makes room to send over a decent left-footed effort to edge Derry into the lead again.

Posted at 13:11 7 Jun 201513:11 7 Jun 2015

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Martin McHugh

BBC Sport NI GAA analyst

"That's sheer class - it's hard to mark a player like Eoin Bradley. That was a great score."

8 mins

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Derry 0-2 Down 0-2

Eoin Bradley scores a delightful effort from out of the right to put Derry in front but within seconds Kevin McKernan scores Down's first from play. Anything you can do...

Posted at 13:09 7 Jun 201513:09 7 Jun 2015

Out on his Eoin

Martin McHugh

BBC Sport NI GAA analyst

I would give Eoin Bradley all the frees. It has been a disappointing start for Mark Lynch.

6 mins

On the level

Derry 0-1 Down 0-1

Eoin Bradley shows his skipper how it should be done as he converts a free for the Oak Leafers.

2 mins

Down are up

Derry 0-0 Down 0-1

The first point goes to Down as Burren club man Donal O'Hare slots over a free.

Derry's captain Mark Lynch has a chance to level from a bit further out and is wide of the mark.

Posted at 12:57 7 Jun 201512:57 7 Jun 2015

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Studio debate is now on Benny Coulter who is no longer involved in the Down panel. Oisin McConville and Martin Clarke agree the 33-year-old Mayobridge forward could still be playing some part at inter-county level.

13:51

High praise for McKernan

One of Down's most talented players - former Aussie Rules star Martin Clarke - is not fit to play this afternoon. But he is in the BBC studio singing the praises of a player who will be on the field today.

"Even though we are the same age, I was always inspired by Kevin McKernan in training. I am expecting to se a lot of him because he is always involved in the action."

Posted at 12:11 7 Jun 201512:11 7 Jun 2015

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BBCCopyright: BBC

Posted at 12:11 7 Jun 201512:11 7 Jun 2015

Starting soon

Celtic Park is the setting for the third quarter-final in this year's Ulster Senior Football Championship. So far, Monaghan and Fermanagh have progressed to meet in the last four stage. The winners of today's showdown will face a semi-final against Donegal or Armagh on Saturday, 27 June.

Nip into the bookies and you'll discover Brian McIver's Derry are slight favourites. That's probably to do with home advantage. Down supporters will feel their boys may well be worth a punt.

That's because the men from Mourne have a spring in their step after a league campaign which saw them promoted to take the place of relegated Derry in Division One.

The recent success has come under the new management of Jim McCorry who got the job of following James McCartan after enjoying success at club level with Kilcoo.

Some commentators believe McCorry can make progress with a Down squad which had undergone much change, stars names like Benny Coulter and Ambrose Rogers having departed the inter-county stage.